Propagation of waves in a multicomponent plasma having charged dust particles

Abstract

Propagation of both low and high frequency waves in a plasma consisting of electrons, ions, positrons and charged dust particles have been theoretically studied. The characteristics of dust acoustic wave propagating through the plasma has been analysed and the dispersion relation deduced is a generalization of that obtained by previous authors. It is found that nonlinear localization of high frequency electromagnetic field in such a plasma generates magnetic field. This magnetic field is seen to depend on the temperatures of electrons and positrons and also on their equilibrium density ratio. It is suggested that the present model would be applicable to find the magnetic field generation in space plasma.

Large amplitude dust-acoustic solitary waves in electron-positron-ion plasma with dust grains

“…Substituting from Eqs. (14) and (15) into the Poisson equation (8), and then integrating with appropriate conditions, leads to…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] Interests in the study of coherent linear and nonlinear wave structures such as solitons, double layers, vortices, etc., in electron-positron (e-p) plasmas [15][16][17][18][19][20][21][22] as well as electron-positron-ion (e-p-i) plasmas [23][24][25] have become considerable in the last few decades. Astrophysical plasmas usually contain highly charged (negative/positive) impurities or dust particulates in addition to electrons, positrons, and ions forming a four-component electron-positron-ion-dust (e-pi-d) plasma system.…”